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[Thomas Sweijen <question645117@xxxxxxxxxxxxxxxxxxxxx>]

Question #645117 on Yade changed:
https://answers.launchpad.net/yade/+question/645117

Thomas Sweijen posted a new comment:
Hello Amiya,

As bruno mentioned, the code is very fresh. but soon there will be an
example script.

To clarify: The merging algorithm in
(https://github.com/yade/trunk/blob/master/pkg/pfv/TwoPhaseFlowEngine.cpp#L791)
only finds tetrahedra from triangulation that belong to the same pore
(i.e. it identifies pores). Once a pore has been identified, saturation
changes can indeed be tracked locally, using a so-called local capillary
pressure-saturation curve.

To come back to your case: Shrinkage of pores is difficult in terms of
simulations (expansion of pores is so much easier to simulate).
Shrinkage causes water to flow out, this is a dynamic processes and thus
dynamic two-phase flow should be considered. In principle, this should
be possible with the current code.  But, these simulations are rather
complex and currently the code is still a beta-version, as I am
exploring it and also debugging it. So, you could definitely use DEM and
perhaps the TwoPhaseFlow engine, but it is still very much in
development, hence the lack of documentation.

I hope that it was understandable, if not, let me know.

Thomas

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